GroupBy< TSource, TKey, TElement, TResult >() [1/2]

static ParallelQuery< TResult > System.Linq.ParallelEnumerable.GroupBy< TSource, TKey, TElement, TResult > ( this ParallelQuery< TSource > source, Func< TSource, TKey > keySelector, Func< TSource, TElement > elementSelector, Func< TKey, IEnumerable< TElement >, TResult > resultSelector )

inlinestatic

Definition at line 570 of file ParallelEnumerable.cs.

    {
        Func<TKey, IEnumerable<TElement>, TResult> resultSelector2 = resultSelector;
        if (resultSelector2 == null)
        {
            throw new ArgumentNullException("resultSelector");
        }
        return from grouping in source.GroupBy(keySelector, elementSelector)
            select resultSelector2(grouping.Key, grouping);
    }

References System.Linq.elementSelector, System.Linq.keySelector, System.Linq.resultSelector, and System.Linq.source.